2. Outline the pastel shapes in gold. Using a striper brush dipped in a metallic polish like Essie in "No Place Like Chrome," draw a thin line in between each box.

3. Add extra gold stripes. Choose a color block on each nail, and draw either horizontal or vertical metallic lines across it. Alternate the direction of your lines on every other nail. Finish with a top coat.

Voilà! Pretty pastel nails that people are going to pin the hell out of. Now, go pin, Instagram, and tweet your DIY design with the hashtag #CosmoManiMonday.